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<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Test: Inheriting 'top' changes from relpos grandparent</title>
  <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu"/>
  <link rel="reviewer" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/cascade.html#value-def-inherit"/>
  <link rel="help" href="http://www.w3.org/TR/css-cascade-3/#inherit"/>
  <link rel="help" href="http://www.w3.org/TR/css-cascade-4/#inherit"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#position-props"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#propdef-position"/>
  <link rel="match" href="dynamic-top-change-001-ref.xht" />

  <meta name="flags" content="dom" />
  <meta name="assert" content="The position of a positioned element which inherits its 'top' value from its relatively positioned grandparent changes when the grandparent's 'top' value is changed."/>
  <style type="text/css"><![CDATA[
  p
  {
  line-height: 1.25;
  margin: 1em 0;
  }

  strong {line-height: 1;}

    .testDiv { position: absolute; width: 100px; height: 100px; }
    #green { top: 4em; background: green; }
    #red { top: inherit; background: red; }
    #parent { top: inherit; position: relative; }
    #grandparent { position: relative; }
  ]]></style>
  <script type="text/javascript"><![CDATA[
    window.onload = function() {
      document.body.offsetWidth;
      document.getElementById("grandparent").style.top = "2em";
    }
  ]]></script>
 </head>
 <body>
   <p>Test passes if there is <strong>no red</strong>.</p>
   <div id="grandparent">
     <div id="parent">
       <div id="red" class="testDiv"></div>
     </div>
     <div id="green" class="testDiv"></div>
   </div>
 </body>
</html>
